Z8S18020FEC

Overview

The Z8S18020FEC is a static microprocessor based on the Z180 core, manufactured by Zilog. It features an 8-bit data bus and supports clock speeds up to 20 MHz. The device operates at 5V with a 3.3V option available at 20 MHz. It includes two DMA channels, two ASCI UARTs, two programmable reload timers, and a CSI/O channel. The MMU allows addressing up to 1 MB. It is housed in an 80-pin QFP package and operates within a temperature range of 0°C to +70°C.

Feature Summary

• Code compatible with ZiLOG Z80 CPU while offering extended instructions and faster execution speeds.
• Features two chain-linked DMA channels for high-speed memory and I/O transfers.
• Includes two enhanced UARTs supporting asynchronous data transfer rates up to 512 Kbps.
• Provides multiple low power-down modes including Halt, Sleep, and Stop modes.

Applications

• Industrial control systems requiring Z80 compatibility with enhanced performance.
• Embedded applications needing integrated serial communication interfaces.
• Systems utilizing direct memory access for efficient data handling.
• Battery-powered devices benefiting from low power consumption modes.

Procurement Notes

Verify the specific ordering suffix 'FEC' against official Zilog documentation to confirm package type and voltage specifications. Confirm availability status as distribution channels may vary. Ensure compliance with RoHS directives if required for your application. Check for any product discontinuance notifications or end-of-life notices prior to finalizing procurement plans.

Selection Notes

Select this component when Z80 software compatibility is required alongside enhanced peripheral integration. Consider the 20 MHz speed for higher throughput needs. Evaluate the 80-pin QFP package constraints for PCB layout. Compare power consumption requirements against the available low-power modes. Verify voltage levels match the system design, noting the 3.3V option at maximum speed.

Part Context

The Z8S180 series represents an enhancement over the original Z80180, combining the Z80 instruction set with additional features like DMA and UARTs. It bridges legacy Z80 systems with modern requirements for lower power and higher integration. The Z180 core provides object-code compatibility while improving execution efficiency.

Replacement Considerations

Check for updated revisions within the Z8S180 family. Verify pinout compatibility with existing designs. Assess functional equivalence of peripheral sets. Confirm operating voltage and temperature ranges match system requirements.